Sir Paul Methuen, of Bishops Cannings, Wiltshire, was an English diplomat and Whig politician who sat in the House of Commons between 1708 and 1747. He was an envoy to Portugal between 1697 and 1708 and later a holder of public offices, particularly in the Royal household.

The Methuen Treaty was a military and commercial treaty between England and Portugal that was signed in 1703 as part of the War of the Spanish Succession.